What gauge Wiring to use from Inverter to house power box (grid tie)

[PoPoShoo]

Our system will be a 13.2 KW grid tie, using a Fronius 11.4 Inverter. The panels will be mounted on a shed. The AC 220v run from the Inverter to the distribution box will be 275 feet (100' inside the shed, then another 175 feet underground to dist. box). This will be Aluminum wiring

I know this is quite far, but doable. I'm having problems calculating the gauge of wire needed. Help requested!!! Thanks

 

[Samsonite801]

See if this one would work for you:

Voltage Drop Calculator

This free voltage drop calculator estimates the voltage drop of an electrical circuit based on the wire size, distance, and anticipated load current.

www.calculator.net

 

[PoPoShoo]

See if this one would work for you:

Voltage Drop Calculator

This free voltage drop calculator estimates the voltage drop of an electrical circuit based on the wire size, distance, and anticipated load current.

www.calculator.net

Appreciate the reply, but somehow, probably a brain fart, I'm not sure what inputs to put in that calculator

 

[Samsonite801]

I might start with something like this... I guess it depends on how much voltage drop you care about, so you can play around with the Wire Size field... And what max load current you will pass. I left it at the default of 1 amp there, you will need to plug in your max current required...

 

[740GLE]

So it’s more of voltage rise for your main concern, also how far from your service meter to the utility transformer? Hopefully you have a 25kva can, some utilities will make you upgrade your service drop.

 

[Mike 134]

using 2 AWG you'll have 3.3% voltage drop at 50 amps using that calculator, less drop as the current goes down

 

[740GLE]

Voltage rise?